Should my wastegate actuator have a hole in it?
#1
Should my wastegate actuator have a hole in it?
I have a stock Evo 9 wastegate actuator and I recently put an O2 dump on. Driving the car today I noticed what sounded like the wastegate fluttering pretty violently. So I pulled the actuator to attempt to tighten the preload a bit. When I flipped it over I noticed the hole in the picture. Looking at the forge replacement on STM there is a set screw in that hole and the hole on mine is clean and looks drilled. So I was wondering if that hole should be there or if I need to close up the hole? Thanks for the input.
Last edited by jason42003; Sep 25, 2014 at 05:10 PM.
#7
Evolved Member
iTrader: (71)
I had that fluttering racket when I installed the 3 port "interrupt" style like 95% of users install them but when I did a "bleed" style routing, the flutter is gone and everything in the boost curve is smooth and consistent.
Last edited by okevolutionVIII; Sep 25, 2014 at 07:21 PM.
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